131447723 has 16 divisors (see below), whose sum is σ = 152241120. Its totient is φ = 112166400.

The previous prime is 131447677. The next prime is 131447731. The reversal of 131447723 is 327744131.

It is a cyclic number.

It is not a de Polignac number, because 131447723 - 2¹⁰ = 131446699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131447723.

It is not an unprimeable number, because it can be changed into a prime (131447753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94493 + ... + 95873.

It is an arithmetic number, because the mean of its divisors is an integer number (9515070).

Almost surely, 2^131447723 is an apocalyptic number.

131447723 is a deficient number, since it is larger than the sum of its proper divisors (20793397).

131447723 is a wasteful number, since it uses less digits than its factorization.

131447723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918.

The product of its digits is 14112, while the sum is 32.

The square root of 131447723 is about 11465.0653290768. The cubic root of 131447723 is about 508.4532439388.

The spelling of 131447723 in words is "one hundred thirty-one million, four hundred forty-seven thousand, seven hundred twenty-three".